Planoohaph co



A. ERICSSON.

MUSIC LEAF TURNER.

APPLICATION FILED JUNE 23. I917.

3 SHEETS-SHEET l.

wumtoz ALBERT farms-"0N.

TH: COLUMBIA PLANOGIIAPH c0., WASHINGNN. D. c.

Patented July 1, 1919.

A ERICSSON. MUSIC LEAF TURNER.

APPLICATION FILED JUNE 23. 1911.

Patented July 1, 1919.

3 SHEETS-SHEET 2.

Hwwutoz ALBERTZRIC'SS on 4A A L Qu nn THE COLUMBIA PLANOGIAPH co.,WASHINGTON, D. c.

A. ERICSSON. MUSIC LEAF TURNER.

APPLICATION FlLED JUNE 23. I9-

3 SHEETS-SHEET 3- Patented July 1, 1919.

wmutoz ALBERT Earassazv THE cOLunllA PLAHMIAPH c0.. WAIHINOTON, D. c.

view of same.

. UNITED STATES PATENT OFFICE.

. ALBERT ERICSSON, OF OAKLAND, CALIFORNIA.

MUSIC-LEAF TURNER.

To all whom it may concern Be it known that I, ALBERT ERIOSSON, citizenof the United States, residing at Oakland, in the countyof Alameda andState of California, have invented certain new and useful Improvementsin Music-Leaf Turners, of which the following is a specification.

This invention is an improved leaf turning attachment for music standsor rack-stands which is adjustable and collapsible andhaving meanswhereby a musician can, at will, turn sheets of music placed on the rackwithout inconvenience or interruption of his work.

In the accompanying drawings:

Figure 1 is a. perspective view of my improved music stand. Fig. 2 is abroken view of the base thereof, parts being shown in centralsection.Fig. 3 is a vertical central section of a universal oint.. Fig. 4 is asection of a detail. Fig.6 is a vertical section of atop. L Fig. 6 isacross section on the line 66 of Fig. 2. Fig.. 7 is a vertical side.view of a detaiL, Fig. 8 is a vertical side view of a top. Fig. 9 is avertical front view of a top. Fig. 10 is a side view of an arm clip. Fig..11 is an end View of an arm clip. Fig. 12 is a vertical rear View ofa keeper. Fig. 13 is a vertical front view of Fig. 14 is a top planviewof same. Fig. 15 is, abroken erspective view of a washer within thetop. Fig. 16 is a vertical central section of a rod actuator within thebase. Fig. 17 is a similar view of an opposed rod actuator. Fig. 18 is avertical side view of a portion of the mechanism within the base. Fig.19 is a ve'ltical side view of a piano with my invention attached. Fig.20 is a front view of same. Fig. 21 is a vertical section of a modifiedbase adapted toa piano. Fig. 22 is a plan view of same, parts thereofbeing broken away. Fig. 23 isa perspective Fig. 24 is a perspective viewof a modified rod adapted to be engaged by the modified base shown inFigs. 21, 22 and 23. 1*ig/25is a perspective view of a knee actionlever.

Referring to the drawings, 1 indicates a base cap which is secured toone end of a vertical tube 2, within the opposite end of which issecured a collar 3, havingbthreeI lugs 4, projecting outwardly.Pivotally connected to said lugs are) ends of three braces 6, theopposite ends of which are pivoted, as shown at 7, to legs 8, restingattheir lower ends Specification of Letters Patent.

Application filed June 23, 1917. Serial No. 176,628. 7

upon a floor, or other support. The upper ends of said legs are pivotedas shown at 9 to a sliding collar 11, movable vertically upon a tubularstandard 12, and securable upon said standard by means of a set screw orthumb nut 13. The lower end of the standard 12, is threaded into thecollar 3, as shown at 14. To the upper end of said standard is secured acollar 16. Through said collar 16 and tubular standard 12, is threaded athumb nut 17 adapted to firmly implnge against the outer surface of atube 18 telescoping into standard 12 and which forms an extending memberof said stand ard.

The upper end of the extension tube 18 is bent at a suitable angle, asshown at 19, in order to present'the music to the eye of the musician atthe proper angle. Near the end of the upper or bent portion of the tube18, is secured a stop collar 21, adapted to form a rest for a tubularcasing 22, telescoped on the extension 18, and secured at any convenientheight thereon by a set scew 23, passing through said tube 22 and acollar 24 thereon. Slidable on the tube 22 is a collar 26 through whichis threaded a set screw 27. The purpose of the collar 26 is to furnish asupport for a music rack 25, and it is prevented from turning upon thetube 22 by a pin 28, which passes through the collar, and

is slidable vertically in a groove 29, in the outward rear surfaceof'the tube 22.

The music rack 25 is of usual construction, I

except in its central upright member 32, which isnotched as shown at 33,forming thereon a Wedge or taper adapted to engage 1n a tapering slot 34in the collar 26. To the top of the tube 22 is screwed one end of asleeve 36, held from turning thereon by a screw 37. Into the oppositeend of the sleeve 36 is threaded a cap plug 38.

Through apertures 39 in the sleeve 36, extend collapsible arms 42. Thesaid arms are formed of sections hinged together, as shown at 43, andtheir outer ends are curved down wardly at right angles, as shown at 44,the downturned ends being provided with spring clips 46 having rubberlining pads 45, adapted to grasp the sheets 47 of printed music.

It will be seen from this construction that the music stand is set up inthe usual manner, the base 1 resting on the floor, and the tripodadjusted until the legs all rest upon the floor where they are securedby theset screw 13. The rack is then put in place, the printed musicplaced thereon and the clips 46 attached to the respective sheets. Theturning of the sheets is accomplished by a mechanism, herein afterdescribed, within the tubular standards and controlled and operated bycollapsible pedals 48 and 49.

lVithin the tube 2 at the base thereof is secured a bearing member 51which is recessed as shown at 52, and 51. The recess 5st is internallythreaded to receive a plug 56, having a hole therein through whichfreely passes a shaft 57, having a reduced portion 58, upon which isswaged a disk 59. The lower surface of said disk 59 and the outersurface of the reduced portion of the shaft 58, bear against ballbearings 61 revoluble in the recess 53.

Surrounding the shaft 57 is a coiled spring 62, having its hearing atthe lower end on the bearing member 51 and at its upper end abuttingagainst the lower end of a casing 63. The said casing 63 isinternallythreadj;

ed at each end to receive plugs 61 and 66 which are secured to the wallsof the casing 15 63 as shown at 67.

pedals 48 and 49 are slidable in slots 86 in the tube 2. The verticalmembers of the pedals 82 also have inwardly projecting teeth 87, placedand adapted to engage respectively teeth 88 and 89, on the perimeters ofthe collars 69 and 73, if the said pedals are depressed against springs91 secured in holes in the vertical members of the pedals. In Fig. 2 thetooth 87 is shown normally ready to engage teeth in the collar 73, whenthe spring 91 is depressed. In that pedal not shown, or in that portionof the tube which is cut away, the tooth 87 is placed in the lowercompartment to engage teeth on the collar 69. The pedals 48 and 19 havedepending or collapsible members 82 pivoted to the vertical members asshown at 92. It results from this construction thatwhen the left pedalis depressed the shaft 57 is rotated to the left, and if the right pedalis depressed the said shaft is rotated to the right.

3; idly secured a cap 93, which has in its central portion a squarehole, to receive one end fi of a square shaft 94, which is secured tothe The casing 63 is divided into two separate tgicap 93, as shown at96, causing said square compartments, by a washer or partition 68,; haftto rotate with the shaft 57.

The other inserted through a slot in the side of the i end of the squareshaft 94, projects above casing 63, and suitably secured within saidgithe end of the pipe or tubular standard 12,

casing. The said washer has a hole in it center of sufficient size topermit the fre passage of the shaft 57. In the lower com partment of thecasing 63, is a collar 69 which surrounds the shaft 57, the said collarbeing internally threaded with a quick acting thread, as shown at 71,adapted to engage in a helical groove 72, in the shaft or. ing 63, is acollar 73, similar to the collar 69, but in an inverted position, andwith its internal thread 74:, in the opposite direction from that of thethread 71. See Figs. 16 and 17. The thread 71 engages a helical groove76, in the shaft, similar in form to the groove 72, but running in theopposite direction. It will be seen from this construction, that if thecasing 63 is depressed against the spring 62, and the collar 7 3 is heldsecurely, and the collar 69 left free to rotate in engagement with thegroove 76, the shaft 57 will be rotated to the left by reason of theengagement of groove 72 with collar 73; while if the collar 69 is heldand the collar 73 is left free to rotate in engagement with groove 72,the shaft 57 will rotate to the right.

lVithin the upper compartment of the casing 63, is a collar or depressor77, through which passes freely the shaft 57. The said depressor 77 isprovided with an annular groove 78, designed to engage extensions 81, ofthe vertical arms of pedals 82, pivoted in grooves 83 in the casing 63,as shown at 84, Fig. 18. The vertical members 82 of the In the uppercompartment of the cas-z and is engaged by a square hole in a plug 97,'ecured within a pipe 98. The pipe 98 exends upwardly to the bentportion of the pipe 18, where it has secured in its end, a

\ plug 99 (Fig. 3) which is attached toa universal joint of the usualconstruction, composed of balls 101 and links 102. The plug 99 has anannular groove 100, to receive a set screw 105, intended to prevent theplug from moving vertically. The upper end of the said universal jointis attached to a plug 103, having a square projecting portion 10 1,which is adapted to enter and transmit motion to a plug 106, secured inone end of a pipe 107, rotatable within the tube 22.

Secured within the other end of said pi )e 107, is a plug 108 (Fig. towhich is rigidly connected, as shown at 109, one end of a twisted stripof metal, forming an actuator 111, which is twisted as shown at 112, andhas secured to its other end a pin 113, revoluble in a hole in a plu114, which is threaded into the sleeve 36. The said pin is threaded andsecured in place by lock nuts 116, above a washer 117. A portion of theactuator 111, is surrounded by a cylindrical tube 118, the ends of whichare closed by plugs 119 (Figs. 4 and 5) having slots 121 to fit themetal strip of the actuator. It will be seen that when the actuator isrotated, the tube 118 will rise or fall accordingly as the actuator isrotated to the right or left, because of the slot 121, which follows theconvolutions of the actuator 111. This vertical movement is timed andcontrolled by the set screw 37,

To the upper end of the shaft 57, is rig having a projection 123, whichengages a double bayonet annular groove in the outer surface of thecylinder 118. The said cylinder 118 is provided with two pairs ofprojecting pins 124, which are designed to engage and rotate any pair ofa series of pairs of pins 126, projecting inwardly from washerlike disks127, rotatable within the sleeve 36. In the said washers are threadedthe ends of the collapsible arms 42, which arms may be rotated through180 of a circle because of the solts 39, in the sleeve 36.

Interposed between the disks 127 (Fig. 15) are washers 128, which areprevented from rotating in the sleeve 36, by projections 129, which fitin grooves 131, in the surface of the inner wall of said sleeve 36, asshown in Fig. 15.

From the foregoing it will be readily understood that in operation, themusician can turn the printed pages by a pressure of the foot uponeither pedal. Accordingly as the right or left pedal is depressed motionis imparted to one of the arms 42 which turn through half a circlecarrying the clip 46 with the printed page. For instance depression ofpedal 82 draws down the casing 63 and simultaneously locking collar 73,thereby causing the shaft 57 to rotate. Such rotation is communicated toactuator 111, through the connections 94, 97 shaft 98, collar 99,flexible shaft 101, 102, connections 104 and 106, and the tubular shaft107. As the actuator 111 is rotated,-it carries the control member 118,and the disk 127 with which said member is engaged, until a verticalportion of the groove in the control member comes opposite screw 123,whereupon the control member is caused to travel longitudinally untilthe pins 124 come opposite the pins 126. By this time the rotationmovement has ceased. The initial rotation of the control member swingsthe leaf engaging arm with which it is coupled, as will be readilyunderstood. 6 I i In Figs. 1 to 18 inclsuive, the improved music rack isillustrated in a form adapted to stand upon a floor and be operated bythe foot of a musician. In Figs. 19 to 25 inclusive, is illustratedamodified form of music rack, to be installed on a piano to be operatedby the knees of the player.

. In the modified form, the music stand is out on the line 1919 of Fig.1, the upper portion being of the same construction as hereinbeforedescribed. The square shaft 94, extends through a bushing, revoluble inthe lower end of the tube 18. The said shaft 94 has on its lower end aprojecting plug 136 (see Fig. 24), adapted to enter a recess 137, in ashaft 138, revolving in a barrel 139, thetop of which is flush with theupper surface of the music shelf, as shown in Fig. 19 and 23. Themechanism for turning th plug 138, which in turn imparts motiontotheshaft 94, is of similar construction to that of the ordinary mortiselock, and is intendedto be mortised into the'lower sideof the top boardof the music shelf of a piano, as shown in Figs. 21 and 23.

The working parts are interposed between two plates 141, which areriveted together at the corners by posts 142, around which are tubularwashers 143, adapted to space the said plates equally at the fourcorners. To the upper plate 141, and in a hole therein is riveted thebarrel 139, designedto extend through a hole bored in the upper surfaceof themusic shelf, so that only the barrel and slotted shaft will bevisible on the surface of said shelf. The lower plate 141 is longer thanthe upper and adapted to be secured against the lower face of the boardsupporting the music rack by screw eyes 145. Secured to the shaft 138are two pinions 146, serrated on their periphery. The pinions 146 areserrated respectively right and left, in order. that the teeth on theouter edge may be engaged and the shaft 138 rotated, by pawls 147pivoted on gears 149, and held in engagement with said teeth by springs151. The gears 14.9 turnfreely upon the shaft 138, and are engaged androtated by segmental gears 152 and 153,,pivoted as shown at 154 betweenthe plates 141. The said segmental gears 152 and 153 have extending arms154 and 156, through the extremities of which are secured posts 157 and158, which extend downward. The arm 156 is shorter than the arm 158 toallow it to pass when rotated. Through holes in the posts 157 and 158,pass respectively cords 159 and 161, secured in said holes by means ofset screws 162. Around the said set screws 162 are secured ends ofcoiled springs 163, the opposite ends of which are secured to the eyesof the screw eyes 145.

It will be seen from the foregoing construction that a pull on the cord161, will cause the segmental gear 1.52, to engage the gear 149,rotating it, and as the pawl 151 engages the gear 146, the shaft 138will be rotated to, the right, while a pull on the cord 159 will havethe opposite effect, by reason of the same mechanism arranged to operatein the opposite direction.

The cords 159 and 161 are passed around pulleys 164 and 165, andconnected to ends of levers 166 by set screws 167. The levers 166 arepivoted near their central parts to the under side of the keyboard of a'piano and adapted to be reciprocated by means of depending fingers 168,pivoted at the forward ends of the levers 166 as shown at 169, andformed with jack-knife springs in order that they may fold upward andout of sight when not in use.

Having thus explained the nature of the invention, and described anoperative man ner of constructing and using the same, al-' thoughwithout attempting to set forth all of the forms in which it may bemade, or all of the forms of its use, the following is claimed 1. Animproved leaf turner comprising a plurality of rotatable disks mountedto rotate independently and each having clutch pins, leaf-engaging armsattached to said disks, an actuator, a control member engaged with saidactuator and having clutch pins complemental t0 the pins of said disks,and means for imparting movement to said actuator.

2. An improved leaf turner compising a plurality of ring-like disksmounted to r0- tate independently, leaf-engaging arms attached to saiddisks, a rotatable actuator formed of a twisted strip of metal extendedthrough said disks, a control member engaged with said actuator andpositioned to travel through the disks, said control member having meansto engage the disks, and means for imparting movement to the actuator.

8. An improvement in leaf turners comprising a plurality of ring-likedisks mounted to rotate independently, leaf-engaging arms attached tosaid disks, a rotatable actuator formed of a twisted strip of metalextended through said disks, a tubular control member inclosing aportion of said actuator and engaging the same, said control memberbeing positioned to travel through said disksand having means to engagethe disks, guidemeans for said control member, and means for impartingmovement to said actuator.

l. An improvement in leaf turners com prising a stand, a tubular casingsupported by said stand, a shaft rotatably mounted within said casing,an actuator connected with said shaft and located within said casing,leaf-engagaing arms having their ends mounted within said casing, acontrol member engaged with said actuator and having means for engagingsaid arms, said control member being of tubular form inclosing saidactuator, and means for selectively rotating said shaft in eitherdirection.

5. A music leaf turner comprising a stand having a. tubular base, anactuator casing supported by said stand, an actuator mounted within saidcasing, a rotatable shaft having one end connected with said actuatorand the other end within said base, leaf-engaging arms operated by saidactuator, a collar within said base, said collar being rotatably andreciprocally mounted upon said shaft, and means whereby said collar maybe locked against rotation, said collar and said shaft havingcomplemental means for effecting rotation of the shaft.

6. A music leaf turner comprising a stand having a tubular base, anactuator casing supported by said stand, an actuator mounted withinsaidcasing, a rotatable shaft having one end connected with said actuatorand the other end within said base, leaf-engaging arms operated by saidactuator, a collar within said base, saidcollar being reciprocally androtatably mounted upon said shaft, said collar and said shaft havingcomplemental means for effecting rotation of said shaft, and a pivotedpedal supported by said base and having means for engaging said collarto prevent rotation thereof.

7. A music leaf turner comprising a stand having a tubular base, anactuator casing supported by said stand, an actuator mounted within saidcasing, a rotatable shaft having one end connected to said actuator andthe other end within said base, leaf-engaging arms operated by saidactuator, two collars within said-base androtatably and reciprocallymounted upon said shaft, said collars and said shaft having complementalmeans whereby the shaft may be rotated by the collars, and means wherebyeither collar may be locked from rotation.

8. A leaf turner comprising a stand having a tubular base, an actuatorcasing supported by said stand, an actuator mounted within said casing,a rotatable shaft having one end connected with said actuator and theother end within said base, leaf-engaging arms operated by saidactuator, two collars within said base and rotatably and reciprocallymounted upon said shaft, said collars having means for effectingrotation of said shaft, and pivoted pedals supported by said base andhaving means for engaging the respective collars to selectively preventrotation thereof.

' 9. A leaf turner comprising a stand having a tubular base, an actuatorcasing supported by said stand, an actuator mounted within said casing,a rotatable shaft having one end connected with said actuator and theother end within said base, leaf-engaging arms operated by saidactuator, a pedal casing within said base, a collar within said pedalcasing and reciprocally and rotatably mounted upon said shaft, saidcollar and said shaft having complemental means for effecting rotationof said shaft, a spring acting against said pedal casing to maintain thesame in a. normal position, and a pedal connected with said pedal casingto depress the latter against the tension of said spring, said pedalhaving means for locking said collar.

10. A leaf turner comprising a stand having a tubular base, an actuatorcasing supported by said stand, an actuator mounted within said casing,a rotatable shaft having one end connected with said actuator and theother end within said base, leaf-engaging arms operated by saidactuator, a pedal casing within said base, collars within said the pedalcasing to depress the latter against the tension of said spring, saidpedals being positioned opposite the respective collars 10 and havingmeans for locking the collars.

In testimony whereof I aflix my signature.

ALBERT ERIGSSON.

pedal casing and reciprocally and rotatably mounted upon said shaft,said collars and said shaft having complemental means whereby the shaftmay be rotated in either direction, a spring actlng against said pedalcasing to maintain the same in a normally elevated position, and pedalsconnected with Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents, Washington, D. 0.

